ASTROSAT CZTI

Data Quality Report

Orbit 35922

Creation date: 2022-06-09T01:57:11.818358
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_080T01_9000005146_35922cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35922cztM0_level2_quad_clean.evt
Size (bytes)416,243,52085,855,680
Size397.0 MB 81.9 MB
Events in quadrant A2,866,218558,516
Events in quadrant B3,197,349552,095
Events in quadrant C2,963,918552,132
Events in quadrant D3,179,321527,067

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122773
B0133042
C0123442
D0134712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5867180.306801%
B58671222.079427%
C5867470.801091%
D5867861.465826%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8792 5869 2 2 0.02% 0.03%
B 8792 5869 74 74 0.84% 1.26%
C 8792 5869 34 34 0.39% 0.58%
D 8792 5869 61 61 0.69% 1.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 171058 1232.54 677 664 138.2
A 9 143 45064 321.17 677 664 138.2
A 15 223 11298 76.92 677 664 138.2
B 5 172 484281 3735.01 668 653 129.5
B 5 255 34647 262.53 668 653 129.5
B 0 213 16428 121.83 668 653 129.5
C 15 214 245483 1600.19 656 662 153.0
C 0 10 157358 1024.19 656 662 153.0
C 0 207 5257 30.03 656 662 153.0
D 10 118 122890 765.51 652 636 159.7
D 8 195 108729 676.84 652 636 159.7
D 13 249 108059 672.65 652 636 159.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter